Here is a small guide to install Android on your HD Mini (Photon)!
1. Download your favorite version of Android for Photon. (You can do it here )
2. Format the memory card with this tool (You can find it here )
2.1 The format must be a Full Erase or Full Overwrite
2.2 Perform additional formatting FAT32 on Windows, Computer> Right Click with the Memory Card> Format.
3. Copy all the files in the ROOT * of your memory card.
4.Staccare the device from your PC and go to File Explorer, run HARET.exe
** 5.Attendere 5-10 minutes and enjoy your device with the Google operating system at home!
* For ROOT refers to the root folder of memory card (eg if the memory card is G: \ files go directly on G: \)
** The first time you run Haret will take longer time to load, then just one or two minutes to launch.
SOURCE: XDA ( Link to original thread )